Cryogenic Electrical Interconnect Engineer

Cryogenic Electrical Interconnect Engineer at Psi Quantum, Milpitas, California (remote). A mid-level full time position in the 3370 - Cryogenics Engineering team, listed under hardware engineering.

The Cryogenic Electrical Interconnect Engineer is responsible for the design, development, integration, and testing of electrical interconnect solutions used within Psi Quantum's cryogenic systems.

This role focuses on cables, connectors, electrical feedthroughs, and PCB interconnects operating in vacuum and cryogenic environments. The engineer develops the electrical connection architecture required to interconnect components within the cryostat, provide reliable connections at cryogenic temperatures, and route electrical signals through the cryostat vacuum boundary to external equipment.

The Cryogenic Electrical Interconnect Engineer combines electrical and mechanical engineering expertise to develop interconnect solutions that meet electrical performance, thermal, mechanical, vacuum, and integration requirements. The role supports engineering activities from concept development through detailed design, component selection, qualification testing, manufacturing, installation, and troubleshooting.

The ideal candidate combines electrical interconnect expertise with strong mechanical engineering judgment and an understanding of the challenges associated with vacuum and cryogenic environments.

They are comfortable working at the interface between electrical, mechanical, thermal, and cryogenic engineering and can translate electrical connectivity requirements into practical cable, connector, feed through, and PCB interconnect solutions.

They are able to move between detailed 3D design, component selection, engineering analysis, supplier coordination, hands-on testing, integration, and troubleshooting. Success in this role requires attention to detail, practical engineering judgement, and effective collaboration across electrical, mechanical, cryogenic, system, and supplier teams.

• Design electrical cables and cable assemblies for operation in vacuum and cryogenic environments.
• Design electrical feedthroughs and interconnect solutions across cryostat vacuum boundaries.
• Design and integrate electrical connectors for PCB and electronic components operating at cryogenic temperatures.
• Develop interconnect architectures between electronic components located inside the cryostat and external room-temperature equipment.
• Select cables, conductors, connectors, feedthroughs, insulation materials, and associated components based on electrical, thermal, mechanical, vacuum, and cryogenic requirements.
• Evaluate thermal conduction through electrical cables and interconnects and contribute to the management of cryostat thermal loads.
• Design cable routing, mechanical supports, strain relief, and thermal anchoring solutions within the cryostat.
• Evaluate mechanical and thermal effects on connectors and cable assemblies, including differential thermal contraction during cooldown and warmup.
• Develop 3D CAD models, drawings, interface definitions, and specifications for cables, connectors, feedthroughs, and associated mechanical components.
• Work closely with electrical, mechanical, PCB, cryogenic, and system engineering teams to define and manage interconnect requirements and interfaces.

• BSc Courses, Eligibility, Fees & Verified Programs |
  
  B.SC . or M.Sc. in Electrical Engineering, Mechanical Engineering, Electromechanical Engineering, or a related engineering discipline.
• 3+ years of experience designing electrical interconnects, cable assemblies, connectors, electronic packaging, or related electromechanical systems.
• Professional experience with connectors and cables for electronic components…